 |
 |
 |
 |
| Seohyun | Na In-Woo | Jeon Kwang-Leol | Yoon Ji-Hye |
| Lee Seul-Bi | Gong Soo-Gwang / Go Myung-Sung | Sun Sam-Joong | Mi-Soo |
 |
 |
 |
 |
 |
| Ki Do-Hoon | Cha Kwang-Soo | Choi Jung-Woo | Jung Wook | Jung In-Gyeom |
| Sun Min-Joon | Sun Il-Joong | Sun Dong-Sik | Secretary Cha | Sun Joo-Cheol |
 |
| Kim Nan-Hee |
| Teacher Min |
 |
 |
 |
 |
 |
| Woo Hyeon | Hong Seok-Cheon | Hwang Young-Hee | Lee Sun-Jung | Kim Hyun-Bin |
| Park Sung-Deok | Hong Seok-Ki | Bang Hyun-Sook | Oh Eun-Jung | Oh Eun-Soo |
 |
 |
 |
 |
 |
| Hwang Suk-Jung | Kim Jung-Tae | Kim Dong-Young | Park Sang-Won | Jang Yun-Seo |
| Yoon Yi-Young | Kang Ho-Jae | Wang Yoon-Ho | Pi Dae-Sik | Jang Young-Woo |
 |
 |
| Kang Hak-Soo | Yun Seo-Jeong |
| Jang Kyung-Cheol | Jang Young-Woo's mother |
 |
| Lee Hoon |
| Jung Hyun-Tae |
 |
 |
| Yun Yoo-Sun | Yoo Ha-Bok |
| Gong Soo-Gwang's mother | Mr. Go |
 |
 |
| Lee Ho-Jung | Cho Han-Gyeol |
| Jo Jang-Kyung | Jo Jang-Geun |
